Inventor · disambiguated record
Yumiko Anzai
Also filed as: ANZAI YUMIKO
54 granted patents·20 pending applications·781 citations·filing 1990–2022
98Inventor score
Files withHITACHI LTD40HITACHI HIGH TECH CORP8HITACHI-LG DATA STORAGE INC6HITACHI MAXELL5MINEMURA HIROYUKI4
Top patents by PatentIndex Score
74 records- 0198US6236635B1Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 1998·Granted May 22, 2001·93 cites·3 claims
- 0297US7012871B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2004·Granted Mar 14, 2006·40 cites·2 claims
- 0395US6532034B2Optical disk, optical disk apparatus, and method for writing figuresHITACHI LTD·Filed 2001·Granted Mar 11, 2003·63 cites·4 claims
- 0494US6529467B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2001·Granted Mar 4, 2003·25 cites·5 claims
- 0594US6343056B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2001·Granted Jan 29, 2002·23 cites·8 claims
- 0691US6231945B1Information recording mediumHITACHI LTD·Filed 1998·Granted May 15, 2001·50 cites·27 claims
- 0791US5753413ARewritable medium for recording information in which the atomic arrangement is changed without the shape being changed and the optical constant is changedHITACHI LTD·Filed 1996·Granted May 19, 1998·67 cites·42 claims
- 0890US8735865B2Semiconductor memory deviceMINEMURA HIROYUKI·Filed 2011·Granted May 27, 2014·14 cites·9 claims
- 0990US5871881AMultilayer optical information mediumHITACHI LTD·Filed 1996·Granted Feb 16, 1999·71 cites·69 claims
- 1089US7680025B2Optical information recording medium, reproducing method thereof, and manufacturing method thereofHITACHI LTD·Filed 2005·Granted Mar 16, 2010·11 cites·11 claims
- 1187US6709801B2Information recording mediumHITACHI LTD·Filed 2001·Granted Mar 23, 2004·25 cites·6 claims
- 1284US7907490B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 15, 2011·2 cites·1 claims
- 1384US6723411B2Information recording medium and method for manufacturing an information recording mediumHITACHI LTD·Filed 2002·Granted Apr 20, 2004·17 cites·12 claims
- 1484US6636477B1Information recording medium and information recording deviceHITACHI LTD·Filed 1999·Granted Oct 21, 2003·37 cites·18 claims
- 1583US11251011B2Electron microscopeHITACHI HIGH TECH CORP·Filed 2016·Granted Feb 15, 2022·3 cites·8 claims
- 1683US6608806B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2002·Granted Aug 19, 2003·8 cites·3 claims
- 1781US6659759B2Apparatus for the production of a recording mediumHITACHI LTD·Filed 2002·Granted Dec 9, 2003·17 cites·6 claims
- 1880US5411430AScanning optical device and method for making a hybrid scanning lens used thereforHITACHI LTD·Filed 1992·Granted May 2, 1995·31 cites·10 claims
- 1978US6703098B2Information recording medium and method for manufacturing information recording mediumHITACHI LTD·Filed 2002·Granted Mar 9, 2004·20 cites·4 claims
- 2077US6954941B2Information recording medium and information recording deviceHITACHI MAXELL·Filed 2003·Granted Oct 11, 2005·9 cites·5 claims
- 2177US6854126B2Information recording medium with SiO2-In2O3-SnO2-ZnS protective layerHITACHI LTD·Filed 2003·Granted Feb 8, 2005·11 cites·8 claims
- 2277US6485808B2Method of manufacturing an optical disk substrate, an apparatus of manufacturing an optical disk and an optical disk substrateHITACHI LTD·Filed 2001·Granted Nov 26, 2002·14 cites·21 claims
- 2376US6806030B2Information recording medium and method for manufacturing information recording mediumHITACHI LTD·Filed 2001·Granted Oct 19, 2004·11 cites·9 claims
- 2474US8891168B2Optical element and optical apparatusMINEMURA HIROYUKI·Filed 2010·Granted Nov 18, 2014·4 cites·11 claims
- 2573US7813258B2Optical information recording medium and optical information reproducing methodHITACHI LTD·Filed 2007·Granted Oct 12, 2010·2 cites·2 claims
- 2672US11561393B2Light guide plate and image display deviceHITACHI LG DATA STORAGE INC·Filed 2019·Granted Jan 24, 2023·1 cites·10 claims
- 2772US5330880AProcess for producing optical disksHITACHI LTD·Filed 1992·Granted Jul 19, 1994·35 cites·12 claims
- 2871US6312779B1Information recording medium and information recording/reproducing apparatusHITACHI LTD·Filed 1999·Granted Nov 6, 2001·40 cites·12 claims
- 2970US10310321B2Optical element, manufacturing method of optical element, and optical deviceHIRATA KOJI·Filed 2012·Granted Jun 4, 2019·2 cites·10 claims
- 3070US9557462B2Optical element and optical apparatusHITACHI MAXELL·Filed 2014·Granted Jan 31, 2017·1 cites·13 claims
- 3168US8147941B2Multi-information-layer recording medium and manufacturing processANZAI YUMIKO·Filed 2008·Granted Apr 3, 2012·2 cites·12 claims
- 3268US7911910B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 22, 2011·0 cites·1 claims
- 3368US7907491B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 15, 2011·0 cites·1 claims
- 3467US7852727B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Dec 14, 2010·0 cites·2 claims
- 3567US7684301B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 23, 2010·0 cites·3 claims
- 3666US8658998B2Semiconductor storage deviceMINEMURA HIROYUKI·Filed 2012·Granted Feb 25, 2014·1 cites·7 claims
- 3766US6436504B2Information recording mediumHITACHI LTD·Filed 2001·Granted Aug 20, 2002·8 cites·20 claims
- 3861US12510459B2Particle measurement device, particle measurement method, sample containerHITACHI HIGH TECH CORP·Filed 2022·Granted Dec 30, 2025·0 cites·15 claims
- 3961US7417933B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2005·Granted Aug 26, 2008·0 cites·2 claims
- 4061US7042823B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2005·Granted May 9, 2006·0 cites·3 claims
- 4160US6842415B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2003·Granted Jan 11, 2005·1 cites·1 claims
- 4258US7746757B2Optical disc medium and optical disc deviceHITACHI LTD·Filed 2007·Granted Jun 29, 2010·0 cites·9 claims
- 4358US5321672AMethod of an apparatus for magneto-optically recording information by changing the position or shape or controlling the diameter of reversed domainsHITACHI LTD·Filed 1990·Granted Jun 14, 1994·11 cites·6 claims
- 4458US2024410811A1Particle Measuring ApparatusHITACHI HIGH TECH CORP·Filed 2022·Application pending·0 cites
- 4555US2007037093A1Information-recording mediumHITACHI MAXELL·Filed 2006·Application pending·0 cites
- 4654US7990817B2Optical disk medium and tracking methodHITACHI LTD·Filed 2007·Granted Aug 2, 2011·0 cites·6 claims
- 4754US7852740B2Information recording medium storing system and storing caseHITACHI LTD·Filed 2007·Granted Dec 14, 2010·0 cites·17 claims
- 4854US6740382B2Information recording mediumHITACHI LTD·Filed 2002·Granted May 25, 2004·1 cites·6 claims
- 4953US10041874B2Optical measurement method and appartusHITACHI LG DATA STORAGE INC·Filed 2016·Granted Aug 7, 2018·0 cites·4 claims
- 5052US9933553B2Optical element and optical deviceHIRATA KOJI·Filed 2012·Granted Apr 3, 2018·0 cites·8 claims
Showing the top 50 of 74 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →